Yesterday I was trying to take pictures with Canon R7 + RFS 18-150 STM lens and found that auto focus struggles at different zoom levels. It works fine when there is no zoom ( 18 mm ) or full zoom ( 150 mm ) but struggles to focus when i use any focal length in between for the same subject. This is around noon so there is plenty of light and it's in in A+ mode.
When i press the shutter button it basically hangs sometimes before focusing or doesn't even respond sometimes. Is this a mechanical issue or a software issue. Camera and lens are almost brand new.
Camera Firmware version: 1.4.0
Lens Firmware version: 1.0.0
It seems to be fine now after I did a factory reset but I am not sure why it happened and if it would again in the future .
